import { IToXmlOptions } from '../options.ts';
import { IElement } from '../util.ts';
import { Value } from '../value.ts';
/**
 * ValueArray object.
 */
export declare class ValueArray extends Value {
    /**
     * Value type.
     */
    static readonly TYPE = "array";
    /**
     * Tag names.
     */
    static readonly TAG_NAMES: string[];
    /**
     * Child tag names.
     *
     * @returns Child tag names map.
     */
    static get CHILD_TAG_NAMES(): Readonly<Map<string, new () => Value>>;
    /**
     * Value value.
     */
    value: Value[];
    /**
     * ValueArray constructor.
     *
     * @param value The value.
     */
    constructor(value?: Value[]);
    /**
     * Array length.
     *
     * @returns The length.
     */
    get length(): number;
    /**
     * Get value at index or null if out of bounds.
     *
     * @param index Array index.
     * @returns The value or null.
     */
    get(index: number): Value | null;
    /**
     * Get value at index or throw.
     *
     * @param index Array index.
     * @returns The value.
     */
    getValue(index: number): Value;
    /**
     * Set value at index.
     *
     * @param index Array index.
     * @param value Value object.
     */
    set(index: number, value: Value): void;
    /**
     * Push values onto array.
     *
     * @param values Value objects.
     */
    push(...values: Value[]): void;
    /**
     * Pop value off array or null.
     *
     * @returns Value object or null.
     */
    pop(): Value | null;
    /**
     * Pop value off array or throw.
     *
     * @returns Value object or null.
     */
    popValue(): Value;
    /**
     * Shift value off array or null.
     *
     * @returns Value object or null.
     */
    shift(): Value | null;
    /**
     * Pop value off array or throw.
     *
     * @returns Value object or null.
     */
    shiftValue(): Value;
    /**
     * @inheritdoc
     */
    fromXmlElement(element: Readonly<IElement>): void;
    /**
     * Decode child element from XML element.
     *
     * @param element XML element.
     * @returns Value element.
     */
    childFromXmlElement(element: Readonly<IElement>): Value;
    /**
     * @inheritdoc
     */
    toXml(options?: Readonly<IToXmlOptions> | null, depth?: number): string;
}